206700913 has 2 divisors, whose sum is σ = 206700914. Its totient is φ = 206700912.

The previous prime is 206700911. The next prime is 206700917. The reversal of 206700913 is 319007602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152942689 + 53758224 = 12367^2 + 7332^2 .

It is a cyclic number.

It is not a de Polignac number, because 206700913 - 2¹ = 206700911 is a prime.

Together with 206700911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (206700911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103350456 + 103350457.

It is an arithmetic number, because the mean of its divisors is an integer number (103350457).

Almost surely, 2^206700913 is an apocalyptic number.

It is an amenable number.

206700913 is a deficient number, since it is larger than the sum of its proper divisors (1).

206700913 is an equidigital number, since it uses as much as digits as its factorization.

206700913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 206700913 is about 14377.0968209858. The cubic root of 206700913 is about 591.2631302816.

The spelling of 206700913 in words is "two hundred six million, seven hundred thousand, nine hundred thirteen".